Bi fold doors
Interior Doors and their classification of way of opening : Bi Fold Doors
Quote from Article entitled Interior Doors and their classification of way of opening:
You should choose interior doors properly because only a door of a high quality can become both a reliable insulator from unusual sounds and eye-catching piece of decoration. You can spend hours leafing through glossy magazines or browse the web looking for "how to choose interior doors", view photos of interior doors, but do not find the right answer. And it is all because a positive solution to the problem is impossible without some knowledge. What should you know about it? That will be discussed.
The full version of the article can be found here.